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磷酸肌酸后处理联合缺血后处理减轻大鼠心肌缺血再灌注损伤 被引量:3

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摘要 目的探讨磷酸肌酸后处理联合缺血后处理对大鼠缺血再灌注心肌损伤的影响。方法取健康、雄性、清洁级Wistar大鼠45只,体重260~290 g。随机分成假手术组(Sham组)、缺血再灌注组(I/R组)、缺血后处理组(IPost组)、磷酸肌酸后处理+缺血后处理组(Pcr+IPost组,于再灌注5 min前给予Pcr 200 mg/kg),均给予心肌缺血30 min,再灌注120 min处理。分别于再灌注2 h后测量各组血清肌酸激酶(CK)、乳酸脱氢酶(LDH)、髓过氧化物酶(MPO),检测缺血心肌丙二醛(MDA)、超氧化物歧化酶(SOD)的变化,TTC染色测定心肌梗死面积。结果 IPost组血清CK、LDH、MPO活性和心肌MDA活性以及心肌梗死面积显著低于I/R组(P<0.05),Pcr+IPost组血清CK、LDH、MPO活性和心肌MDA活性以及心肌梗死面积与IPost组比较进一步降低(P<0.05);IPost组心肌组织SOD活性显著高于I/R组,(P<0.05),Pcr+IPost组SOD活性较IPost组进一步升高(P<0.05)。结论磷酸肌酸后处理组联合缺血后处理组可以减轻大鼠心肌缺血再灌注损伤,两者起到很好的协同作用,其机制可能与抑制氧自由基产生和中性粒细胞的炎性浸润有关。
出处 《中国老年学杂志》 CAS CSCD 北大核心 2013年第19期4792-4794,共3页 Chinese Journal of Gerontology
基金 山东省优秀中青年奖励基金资助项目(No.2007BS03003)
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参考文献10

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